Issue trace events to gather repaint information.

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1054 matching lines @@
     StyleDifference adjustStyleDifference(StyleDifference, unsigned contextSensitiveProperties) const;
 
     Color selectionColor(int colorProperty) const;
 
     void removeShapeImageClient(ShapeValue*);
 
 #ifndef NDEBUG
     void checkBlockPositionedObjectsNeedLayout();
 #endif
 
+    enum RepaintReason {
+        RepaintNone,
+        RepaintSelfLayout,
+        RepaintBorderFitLines,
+        RepaintBorderRadius,
+        RepaintOutlineBoxChange,
+        RepaintBoundsChange
+    };
+    const char* repaintReasonToString(const RepaintReason) const;
+
     RefPtr<RenderStyle> m_style;
 
     Node* m_node;
 
     RenderObject* m_parent;
     RenderObject* m_previous;
     RenderObject* m_next;
 
 #ifndef NDEBUG
     unsigned m_hasAXObject             : 1;
@@ skipping 341 matching lines @@
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h